High-accuracy position detection apparatus

Details High-accuracy position detection apparatus High-accuracy position detection apparatus

G - Physics

01

D

354/25, 354/32

G01D 21/00 (2006.01) G01D 3/02 (2006.01)

Patent

CA 1291570

Abstract of the Disclosure A high-accuracy position detection apparatus comprises a position detector for detecting a position signal indicating the rotation position of a motor; a coupler for coupling the motor to the position detector with a certain eccentricity; a coupling eccentricity detector, connected to the position detector, for detecting an eccentricity signal, corresponding to a coupling eccentricity of the coupler, from the position detection signal; and a true position signal syn- thesizer, connected to the position detector and the coupling eccentricity detector, for combining -the position signal with the eccentricity signal so as to produce a true position signal which indicates the true position of the motor and is independent of the coupling eccentricity of the coupler.

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